52 0

A color local dimming algorithm for liquid crystals displays using color light emitting diode backlight systems

Title
A color local dimming algorithm for liquid crystals displays using color light emitting diode backlight systems
Author
권오경
Keywords
Local dimming; Color distortion; LCD
Issue Date
2013-04
Publisher
ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Citation
OPTICS AND LASER TECHNOLOGY 권: 47 페이지: 80-87
Abstract
A color local dimming algorithm is proposed to reduce the image distortion and power consumption of liquid crystal displays (LCDs) by using color light emitting diode (LED) backlights. The proposed algorithm is demonstrated using a 55-in. LCD panel with a RGB LED backlight system. In the proposed algorithm, the dimming rate of local blocks is determined by calculating the image distortion of the dimming image, and this is used to achieve steady image quality. The image data of the LCD panel are modified to reduce color distortion by removing the differences in chromaticity. Simulated test results show that the average, standard deviation, and relative variation of PSNRs for the test video are 43.74 dB, 3.57 dB, and 0.082, respectively. The average color differences using the proposed algorithm are 9.6, 5.0, 5.6, and 4.2 for the test patterns with 2 x 2,4 x 2,4 x 4, and 8 x 4 white boxes, respectively. The measured average power saving ratio for the test video is 67.3%. (C) 2012 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0030399212003933http://hdl.handle.net/20.500.11754/54575
ISSN
0030-3992
DOI
10.1016/j.optlastec.2012.08.041
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE